Using a mixer, cream sugar and lard together until well incorporated.
Add salt, sour cream and buttermilk mixing until fully incorporated.
Add baking soda, baking powder, nutmeg and one cup of flour. Mix gently. Continue adding flour, one cup at a time, until fully incorporated.
Wrap dough in a piece of plastic wrap and refrigerate 8 hours or overnight.
When ready to bake, preheat oven to 400°. Lightly grease cookie sheets.
Remove about 1/4 of the dough from refrigerator and divide into golf-ball-sized portions. Sprinkle countertop lightly with flour (just enough to keep dough from sticking). Roll each portion into a skinny log (see image for reference), 6-8 inches long.
Form each log into desired shape (e.g. figure-eights, hearts, "S", knots) and place on cookie sheet. Leave about 2 inches between cookies.
Bake for 6-8 minutes, just until bottom of cookies is lightly browned. If the tops brown, they have baked too long. Unless you like them that way ... then they were baked perfectly!
Continue with remaining dough, working in batches. Keeping the dough cold will help with shaping the cookies.